Cyber-security specialist Dylan Keane is working undercover to suss out a corporate thief. When he zeroes in on Harper Vale, he thinks he's found his mole. Harper has a reputation as a coding savant and an introvert. Dylan's interest is flattering, but after she's implicated in the theft of the company's protected software, she doubts everything he's told her. When a series of potentially deadly accidents occur involving Harper, Dylan wonders if she is being set up to take the fall. One thing is certain: the more time they spend together, the more Dylan realizes he's the one who's falling—for Harper.